/Engine/Source/Runtime/Engine/Classes/GameFramework/CharacterMovementComponent.h
Compute distance to the floor from bottom sphere of capsule and store the result in FloorResult. This distance is the swept distance of the capsule to the first point impacted by the lower hemisphere, or distance from the bottom of the capsule in the case of a line trace. This function does not care if collision is disabled on the capsule (unlike FindFloor).
virtual void K2_ComputeFloorDist ( FVector CapsuleLocation, float LineDistance, float SweepDistance, float SweepRadius, [FFindFloorResult](API\Runtime\Engine\FFindFloorResult) & FloorResult ) const